Question

目标是允许这四个端点：

POST    v1/invoices<br/>
POST    v1/invoices/12345<br/>
POST    v1/invoices/12345/attachment<br/>
POST    v1/invoices/12345/image

路由条目：

routes.MapHttpRoute(
        name: "InvoiceAttachments",
        routeTemplate: "v1/invoices/{id}/attachments",
        defaults: new { controller = "invoices", action = "PostAttachment" }
    );

routes.MapHttpRoute(
        name: "InvoiceImages",
        routeTemplate: "v1/invoices/{id}/images",
        defaults: new { controller = "invoices", action = "PostImage" }
    );

这些是我在控制器中的四个函数定义：

[HttpPost]
[ActionName("PostAttachment")]
public HttpResponseMessage PostAttachment(int id)

[HttpPost]
[ActionName("PostImage")]
public HttpResponseMessage PostImage(int id)

[HttpPost]
public HttpResponseMessage Post(int id)    

[HttpPost]
public HttpResponseMessage Post()

然而，当我使用第一个URI发布发票时，获得识别的路线是附件路线。如何在ID变量后面有不同部分的端点？

Answer 1

知道了！

路线：

routes.MapHttpRoute(
        name: "InvoiceStuff",
        routeTemplate: "v1/invoices/{id}/{*action}",
        defaults: new { controller = "invoices", action = "" }
    );

功能定义：

[HttpPost]
[ActionName("Attachments")]
public HttpResponseMessage Attachments([FromUri]int id)

[HttpPost]
[ActionName("Images")]
public HttpResponseMessage Images([FromUri]int id)

[HttpPost]
public HttpResponseMessage Post()

[HttpPost]
[ActionName("")]
public HttpResponseMessage Post([FromUri]int id)

完美无缺。请注意，在路由中我指定了默认操作“”，因为带有通配符的webAPI路由中存在缺陷。如果我没有完成默认设置，则会引发空引用异常。有关缺陷的更多信息可以在这里找到：http://aspnetwebstack.codeplex.com/workitem/718 - 计划在ASP.NET v5中修复。

感谢您的帮助！

Answer 2

我认为你必须定义另一个路由，因为第一个URI不应该与InvoiceAttachments路由匹配，因为它在末尾没有“/ attachments”

Answer 3

尝试使用单一路线

config.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{id}/{action}",
    defaults: new { id = RouteParameter.Optional, action = "DefaultAction"  }
);

然后装饰像

这样的功能

[HttpPost]
[ActionName("DefaultAction")]
public HttpResponseMessage Post()


[HttpPost]
public HttpResponseMessage PostImage(int id)

Answer 4

您是否尝试使用约束而不是默认值？

routes.MapHttpRoute(
        name: "InvoiceAttachments",
        routeTemplate: "v1/invoices/{id}/attachments",
        defaults: new { controller = "invoices" },
        constraints: new { action = "PostAttachment" } 
    );

routes.MapHttpRoute(
        name: "InvoiceImages",
        routeTemplate: "v1/invoices/{id}/images",
        defaults: new { controller = "invoices" },
        constraints: new { action = "PostImage" } 
    );

routes.MapHttpRoute(
        name: "Default",
        routeTemplate: "v1/invoices/{id}",
        defaults: new { controller = "invoices" }
    );

<强>更新

你可能通过将动作作为URL部分来破解它：

routes.MapHttpRoute(
        name: "InvoiceAttachments",
        routeTemplate: "v1/invoices/{id}/{action}",
        defaults: new { controller = "invoices" },
        constraints: new {action = "attachments|images"}
    );

routes.MapHttpRoute(
            name: "default",
            routeTemplate: "v1/invoices/{id}",
            defaults: new { controller = "invoices", id = RouteParameter.Optional },
            constraints: new {action = "attachments|images"}
        );

和控制器方法：

[HttpPost]
[ActionName("attachments")]
public HttpResponseMessage PostAttachment(int id)

[HttpPost]
[ActionName("images")]
public HttpResponseMessage PostImage(int id)

public HttpResponseMessage Post(int id)

public HttpResponseMessage Post()

Web API路由操作

4 个答案: